PLT-3203 Commenting on the RHS while in permalink view makes the message not show up in the RHS (#3282)

webapp/components/create_comment.jsx

@@ -5,6 +5,7 @@ import $ from 'jquery';
 import ReactDOM from 'react-dom';
 import AppDispatcher from '../dispatcher/app_dispatcher.jsx';
 import Client from 'utils/web_client.jsx';
+import * as AsyncClient from 'utils/async_client.jsx';
 import ChannelStore from 'stores/channel_store.jsx';
 import UserStore from 'stores/user_store.jsx';
 import PostDeletedModal from './post_deleted_modal.jsx';
@@ -150,6 +151,8 @@ class CreateComment extends React.Component {
         Client.createPost(
             post,
             (data) => {
+                AsyncClient.getPosts(this.props.channelId);
+
                 const channel = ChannelStore.get(this.props.channelId);
                 const member = ChannelStore.getMember(this.props.channelId);
                 member.msg_count = channel.total_msg_count;